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[ADF-4387] Configuration option to change the dafault viewer zoom (#4645)

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* [ADF-4387] Configuration option to change the dafault viewer zoom
This commit is contained in:
arditdomi
2019-04-23 20:34:39 +01:00
committed by Eugenio Romano
parent d52671823e
commit a6552dbb17
7 changed files with 307 additions and 33 deletions
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87
lib/core/viewer/components/pdfViewer.component.ts
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@@ -114,6 +114,26 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
this.onPagesLoaded = this.onPagesLoaded.bind(this);
this.onPageRendered = this.onPageRendered.bind(this);
this.randomPdfId = this.generateUuid();
this.currentScale = this.getUserScaling();
}
getUserScaling(): number {
const scaleConfig = this.appConfigService.get<number>('adf-viewer.pdf-viewer-scaling', undefined) / 100;
if (scaleConfig) {
return this.checkLimits(scaleConfig);
} else {
return 1;
}
}
checkLimits(scaleConfig: number): number {
if (scaleConfig > this.MAX_SCALE) {
return this.MAX_SCALE;
} else if (scaleConfig < this.MIN_SCALE) {
return this.MIN_SCALE;
} else {
return scaleConfig;
}
}
ngOnChanges(changes: SimpleChanges) {
@@ -235,10 +255,10 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
scalePage(scaleMode) {
this.currentScaleMode = scaleMode;
if (this.pdfViewer) {
const viewerContainer = document.getElementById(`${this.randomPdfId}-viewer-main-container`);
const documentContainer = document.getElementById(`${this.randomPdfId}-viewer-pdf-viewer`);
const viewerContainer = document.getElementById(`${this.randomPdfId}-viewer-main-container`);
const documentContainer = document.getElementById(`${this.randomPdfId}-viewer-pdf-viewer`);
if (this.pdfViewer && documentContainer) {
let widthContainer;
let heightContainer;
@@ -257,37 +277,42 @@ export class PdfViewerComponent implements OnChanges, OnDestroy {
const pageWidthScale = (widthContainer - padding) / currentPage.width * currentPage.scale;
const pageHeightScale = (heightContainer - padding) / currentPage.width * currentPage.scale;
let scale;
let scale = this.getUserScaling();
if (!scale) {
switch (this.currentScaleMode) {
case 'page-actual':
scale = 1;
break;
case 'page-width':
scale = pageWidthScale;
break;
case 'page-height':
scale = pageHeightScale;
break;
case 'page-fit':
scale = Math.min(pageWidthScale, pageHeightScale);
break;
case 'auto':
let horizontalScale;
if (this.isLandscape) {
horizontalScale = Math.min(pageHeightScale, pageWidthScale);
} else {
horizontalScale = pageWidthScale;
}
horizontalScale = Math.round(horizontalScale);
scale = Math.min(this.MAX_AUTO_SCALE, horizontalScale);
switch (this.currentScaleMode) {
case 'page-actual':
scale = 1;
break;
case 'page-width':
scale = pageWidthScale;
break;
case 'page-height':
scale = pageHeightScale;
break;
case 'page-fit':
scale = Math.min(pageWidthScale, pageHeightScale);
break;
case 'auto':
let horizontalScale;
if (this.isLandscape) {
horizontalScale = Math.min(pageHeightScale, pageWidthScale);
} else {
horizontalScale = pageWidthScale;
}
scale = Math.min(this.MAX_AUTO_SCALE, horizontalScale);
break;
default:
this.logService.error('pdfViewSetScale: \'' + scaleMode + '\' is an unknown zoom value.');
return;
}
break;
default:
this.logService.error('pdfViewSetScale: \'' + scaleMode + '\' is an unknown zoom value.');
return;
this.setScaleUpdatePages(scale);
} else {
this.currentScale = 0;
this.setScaleUpdatePages(scale);
}
this.setScaleUpdatePages(scale);
}
}